scholarly journals Effect of ecdysteroids on oogenesis in the freshwater crab Travancoriana schirnerae Bott, 1969 (Crustacea: Gecarcinucidae)

2019 ◽  
Vol 6 (12) ◽  
pp. 87-101
Author(s):  
Sudha Devi Arath Raghavan ◽  
Aswani Ayanath
Keyword(s):  
Reproductive Performance ◽  
Gonadosomatic Index ◽  
Poor People ◽  
Oocyte Diameter ◽  
Freshwater Crab ◽  
Histological Features ◽  
Protein Substitute ◽  
Concurrent Control ◽  
Ovarian Growth ◽  
The Mean

This study evaluated the reproductive performance of female Travancoriana schirnerae Bott, 1969 (Crustacea: Gecarcinucidae) administered with 20-OH ecdysone during different phases of the oogenic cycle. The effect of administration was evaluated by comparing the mean gonadosomatic index, oocyte diameter, oocyte proportion values and histological features of the control and concurrent control ovaries with those of the experimentals. The results clearly indicated that 20-OH ecdysone can stimulate ovarian growth and maturation in all phases of the oogenic cycle, though it caused statistically significant effects only during the early and middle vitellogenic phases, evidenced from the accelerated gonadosomatic index, oocyte diameter and oocyte proportion values, occurrence of vitellogenic oocytes in avitellogenic and previtellogenic ovaries, increased degree of yolk deposition and proliferation of gonia in the experimental ovaries compared to the controls. The outcome of this study is quite promising in the aquaculture practice of this locally abundant edible freshwater crab which forms a cheap protein substitute for the malnourished tribes/poor people of Wayanad.

scholarly journals Oocyte development in captive Atlantic horse mackerel Trachurus trachurus

2009 ◽  
Vol 66 (4) ◽  
pp. 623-630 ◽  
Author(s):  
Hilkka O. N. Ndjaula ◽  
Tom Hansen ◽  
Maria Krüger-Johnsen ◽  
Olav Sigurd Kjesbu
Keyword(s):  
Gonadosomatic Index ◽  
Oocyte Development ◽  
Horse Mackerel ◽  
Hepatosomatic Index ◽  
Oocyte Diameter ◽  
Trachurus Trachurus ◽  
The Mean ◽  
Threshold Variation ◽  
Index Condition ◽  
Atlantic Horse Mackerel

Abstract Ndjaula, H. O. N., Hansen, T., Krüger-Johnsen, M., and Kjesbu, O. S. 2009. Oocyte development in captive Atlantic horse mackerel Trachurus trachurus. – ICES Journal of Marine Science, 66: 623–630. This 13-month experimental study focused on developing oocyte production in 101 adult female Atlantic horse mackerel. In addition, proxies of energy patterns in relation to oocyte development were investigated. The fish were captured off western Norway and fed to satiation from October 2005 to November 2006 in two replicate adjacent circular tanks. Monthly histological examination of the ovaries indicated that vitellogenic oocytes were present at all times throughout the study period, but that oocyte development did not progress past the incipient migratory nucleus stage. The oocyte diameter (OD) threshold between pre-vitellogenic and vitellogenic oocytes and the mean OD of the leading cohort were investigated, and no hiatus was observed within the OD size distribution around the 185-µm pre-vitellogenic and vitellogenic threshold. Variation in gonadosomatic index, hepatosomatic index, condition factor, and fat content (as measured by the use of a Distell Fish Fatmeter) increased with oocyte development. The observed development of oocyte recruitment and the absence of a hiatus in the oocyte distribution are characteristics of an asynchronous spawner. The species seems to have a prolonged spawning season, judging from the advanced and variety of maturity stages throughout the study period.

scholarly journals Impact of methoprene on oogenesis of the freshwater crab Travancoriana schirnerae Bott, 1969 (Decapoda: Gecarcinucidae)

2017 ◽  
Vol 4 (7) ◽  
pp. 165-179 ◽  
Author(s):  
Latha Nadkandi Padmanabhan ◽  
Sudha Devi Arath Raghavan ◽  
Aswani Ayanath
Keyword(s):  
Oocyte Diameter ◽  
Freshwater Crab ◽  
Histopathological Changes ◽  
Significant Drop ◽  
Ovarian Growth ◽  
Germinal Zone ◽  
General Metabolism ◽  
Sublethal Doses ◽  
The Impact ◽  
Platelet Formation

The current study investigated the impact of methoprene during different phases of oogenesis in the freshwater crab Travancoriana schirnerae Bott, 1969 (Decapoda: Gecarcinucidae), a non-target organism abundant in the wetlands of Wayanad, Kerala, India. Sublethal doses of methoprene impaired ovarian growth as evidenced by reduction in gonadosomatic values, fall in mean oocyte diameter and histopathological changes in all the phases of oogenesis. A significant drop in the proportion of mature oocytes in the experimental crabs were noticed, i.e. methoprene treatment delayed the growth of avitellogenic oocytes to previtellogenic and previtellogenic to early, middle or late vitellogenic stages. Reduction in proliferation of oogonia in the germinal zone and ruptured oolemma in chromatin nucleolus and perinuclear stage oocytes was persistent. Histopathological changes in the primary vitellogenic oocytes include karyoplasmic clumping, perinuclear space atresia, shrinkage and vacuolation of ooplasm, reduction in size of yolk globules and vacuolated globules and degeneration of follicle epithelium. Methoprene negatively affected yolk platelet formation as evidenced by the irregularly fused and distorted yolk platelets of late vitellogenic oocytes. The observed cellular deformities possibly suggest the direct effects of methoprene on the oocytes through general metabolism and growth or through hormones controlling ovarian growth.

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
Life History ◽  
Gonadosomatic Index ◽  
Oocyte Diameter ◽  
Conservation Ecology ◽  
Nest Sites ◽  
South Central ◽  
Final Maturation ◽  
The Mean ◽  
Index Value ◽  
Selection Of

<em>Abstract</em>.—The Ouachita madtom <em>Noturus lachneri</em> is endemic to south-central Arkansas. We investigated its feeding and reproductive biology to augment life history information and facilitate management of the species. We measured abundance of invertebrates in the environment and in the diet of Ouachita madtoms in pool and riffle habitats in three streams each season for 2 years. Feeding selection of Ouachita madtoms was determined by comparing the proportion of each taxon found in the environment to that consumed in the diet. Ouachita madtoms strongly selected for chironomids in all seasons in all habitats for both years. Coleopterans, ephemeropterans, and odonates were avoided or unavailable compared to their abundance in the environment. Nonetheless, Ouachita madtoms consumed high numbers of a wide variety of organisms and can best be classified as a feeding generalist. Oocyte diameters and gonadosomatic index values were measured from fish collected on a variety of dates over a 6-year period, and nest sites were examined during two spawning seasons. The maximum gonadosomatic index value was 22.0 for females and 0.83 for males. The diameter of oocytes at time of final maturation, based on the maximum oocyte diameter (3.5 mm) and the mean (±SD) yolk diameters of spawned eggs (3.3 ± 0.2 mm), is greater than 3.0 mm. Fecundity ranges from 6 to 69 oocytes (mean = 35 ± 15). The spawning season begins in early June and terminates by mid-August. Male Ouachita madtoms guard bowl-shaped nests containing 33 ± 13 ova. The nests are built in gravel or gravel/sand substrate located in glides above riffles and covered by slab rocks that range in size from 100 to 1,200 cm<sup>2</sup> in area. Ouachita madtoms can nest successfully in areas of low current velocity, but siltation apparently inhibits spawning activity.

scholarly journals Clinical, Laboratory and Histological Features of Dipeptidyl Peptidase-4 Inhibitor Related Noninflammatory Bullous Pemphigoid

2021 ◽  
Vol 10 (9) ◽  
pp. 1916
Author(s):  
Ágnes Kinyó ◽  
Anita Hanyecz ◽  
Zsuzsanna Lengyel ◽  
Dalma Várszegi ◽  
Péter Oláh ◽  
...  
Keyword(s):  
Bullous Pemphigoid ◽  
Clinical Laboratory ◽  
Case Series ◽  
Dipeptidyl Peptidase ◽  
Area Index ◽  
Histological Features ◽  
Dipeptidyl Peptidase 4 ◽  
First Case ◽  
Dipeptidyl Peptidase 4 Inhibitor ◽  
The Mean

Bullous pemphigoid (BP) is an autoimmune blistering disease of elderly patients that has shown increasing incidence in the last decades. Higher prevalence of BP may be due to more frequent use of provoking agents, such as antidiabetic dipeptidyl peptidase-4 inhibitor (DPP4i) drugs. Our aim was to assess DPP4i-induced bullous pemphigoid among our BP patients and characterize the clinical, laboratory and histological features of this drug-induced disease form. In our patient cohort, out of 127 BP patients (79 females (62.2%), 48 males (37.7%)), 14 (9 females and 5 males) were treated with DPP4i at the time of BP diagnosis. The Bullous Pemphigoid Disease Area Index (BPDAI) urticaria/erythema score was significantly lower, and the BPDAI damage score was significantly higher in DPP4i-BP patients compared to the nonDPP4i group. Both the mean absolute eosinophil number and the mean periblister eosinophil number was significantly lower in DPP4i-BP patients than in nonDPP4i cases (317.7 ± 0.204 vs. 894.0 ± 1.171 cells/μL, p < 0.0001; 6.75 ± 1.72 vs. 19.09 ± 3.1, p = 0.0012, respectively). Our results provide further evidence that DPP4i-associated BP differs significantly from classical BP, and presents with less distributed skin symptoms, mild erythema, normal or slightly elevated peripheral eosinophil count, and lower titers of BP180 autoantibodies. To our knowledge, this is the first case series of DPP4i-related BP with a non-inflammatory phenotype in European patients.

scholarly journals Effect of different maturation diets on reproductive performance of the broodstock of purple mangrove crab, Scylla tranquebarica

2017 ◽  
Author(s):  
Fui Yin Thien ◽  
Annita Seok Kian Yong
Keyword(s):  
Reproductive Performance ◽  
Gonadosomatic Index ◽  
Water System ◽  
Natural Food ◽  
Hatching Rate ◽  
Initial Body Weight ◽  
Control Female ◽  
Formulated Diets ◽  
Mangrove Crab ◽  
Recirculating Water System

The present study was aimed at evaluating the reproductive performance of the broodstock of purple mangrove crab (Scylla tranquebarica) fed natural food and formulated diets supplemented with astaxanthin and/or DHA. Formulated diets were supplemented with 500 mg kg-1 of astaxanthin (FA), 10 g kg-1 of DHA (FD) and both astaxanthin and DHA (FA+D). Diet without astaxanthin and DHA (FCon) and natural food (NF) consisted of forage fish (Valamugil sp.), shrimp (Penaeid sp.) and mangrove clam (Polymesoda sp.) to serve as control. Female broodstock of initial body weight 129.07±17.03 g were stocked in HDPE tank and cultured under recirculating water system. Broodstock maturation was monitored until spawning. Reproductive performance of female and condition of the larvae were also evaluated. After 50 weeks, broodstock fed FA+D diet showed better maturation percentage, spawning rate, gonadosomatic index, oocytes diameter, molting, molt death syndrome and survival rate than FCon group (P0.05) to the FA+D group but diet FD resulted in better performance than FA. Broodstock fed FA+D diet had the highest hatching rate, number of larvae produced and significantly higher zoea II survival compared to FCon and NF groups (P

scholarly journals Reproductive Performances and Egg Qualities in African Catfish (Clarias gariepinus) Broodstocks Supplemented with Curcumin and Thyroxine Hormone

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 32
Author(s):  
Livana Dethris Rawung ◽  
Damiana Rita Ekastuti ◽  
Muhammad Zairin Junior ◽  
Min Rahminiwati ◽  
Ade Sunarma ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Egg Quality ◽  
Gonadosomatic Index ◽  
Clarias Gariepinus ◽  
Density Lipoprotein ◽  
Cholesterol Concentration ◽  
Hepatosomatic Index ◽  
African Catfish ◽  
Hatching Rate ◽  
Significant Difference

An experiment was designed to study the effects of curcumin and thyroxine hormone supplementation in the diet to improve the reproductive performance of catfish broodstock by improving egg quality that eventually increases the production of seedlings. Catfish used in this experiment were supplemented with curcumin and thyroxine hormone through their feeds for 12 weeks. The results showed that there was no significant difference (p > 0.05) in the hepatosomatic index (HSI), gonadosomatic index (GSI), percentage of gonad maturity, total cholesterol concentration in the spawned eggs, high density lipoprotein (HDL) concentration in the spawned eggs, fertilization rate of spawned eggs, and hatching rate of fertilized eggs.  However, there were significant differences (p < 0.05) in the concentration of vitellogenin in the spawned eggs, egg diameter of the spawned eggs, and the triglycerides contents of spawned eggs. It was concluded that curcumin and thyroxine supplementations of African catfish increased vitellogenin concentrations and diameters of spawned eggs that have great potential to improve the reproductive performance.

scholarly journals Uterine prolapse in cows: Effect of raising the rear end on the clinical outcomes and reproductive performance

2010 ◽  
Vol 55 (No. 3) ◽  
pp. 113-118 ◽  
Author(s):  
M. Ishii ◽  
T. Aoki ◽  
K. Yamakawa ◽  
T. Uyama ◽  
S. El-khodery ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Reproductive Performance ◽  
Recovery Rate ◽  
Uterine Prolapse ◽  
Breeding Performance ◽  
The Mean

The aim of this study was to evaluate the effect of raising the rear end when replacing the prolapsed uterus in cows on the outcome and reproductive performance. A total of 76 cows with uterine prolapse were investigated, 10 of which had died before treatment. According to the posture, cows were divided into standing (Standing: <I>n </I>= 11) and recumbent (Recumbent: <I>n </I>= 55). Recumbent cows were subdivided randomly into lying (Lying: <I>n </I>= 24), lifting up using a cow-lift (Cow-lift: <I>n </I>= 18), and raising hind legs using a tractor (Raising: <I>n </I>= 13). Recovery rate after treatment of all cows was 60.6%. The recovery rate of Recumbent (52.7%) was significantly (<I>P&nbsp;</I>&lt;&nbsp;0.01) lower than Standing (100%). Among the recumbent cows, Lying showed the lowest recovery rate (37.5%), which was significantly lower than the recovery rate (64.5%) of the combined Cow-lift and Raising groups. The mean nonpregnant term of Raising (144 days) was significantly (<I>P</I> &lt; 0.05) shorter than of Cow-lift (297 days). In conclusion, the method of replacing the uterus by raising the hind legs during treatment of uterine prolapse in cows could improve the recovery rate and breeding performance.

scholarly journals Reproductive patterns of bogue, Boops boops (Sparidae), in the southeastern Adriatic Sea

2017 ◽  
Vol 58 (1) ◽  
pp. 117-125
Author(s):  
Tatjana Dobroslavić ◽  
Renata Mozara ◽  
Branko Glamuzina ◽  
Vlasta Bartulović
Keyword(s):  
Total Population ◽  
Adriatic Sea ◽  
Condition Factor ◽  
Gonadosomatic Index ◽  
Gonad Development ◽  
Size Class ◽  
Oocyte Diameter ◽  
Allometric Growth ◽  
Monthly Distribution ◽  
Boops Boops

The reproductive characteristics of bogue (Boops boops) in the southeastern Adriatic Sea are presented in this study. The analysis is based on 676 specimens caught by seine net from December 2011 to November 2012. Total length of females ranged from 13.3 to 29.3 cm and males from 15.1 to 26.3 cm. The overall sex ratio of females to males was 1:0.85 (χ2=4.314; P &lt; 0.05) with a slightly higher number of females in the largest size class. Length-weight relationship for the total population indicated negative allometric growth (b=2.911). Values of the condition factor are relatively low for both sexes. Maximum values were recorded in September 1.025 for females and 1.029 for males. Gonadosomatic index and histological examination showed that the spawning season of the bogue in the Adriatic is from January to May with peak in February. Six stages of gonad development were identified: immature, undergoing maturation, ripening, ripe, spawning and spent. The monthly distribution of the different sexual maturity stages and the frequency distribution of oocyte diameter revealed that this species is a batch spawner.

scholarly journals Records of performance and sanitary status from a dairy cattle herd in southern Brazil

2011 ◽  
Vol 31 (1) ◽  
pp. 01-09 ◽  
Author(s):  
Cláudio E. F. Cruz ◽  
Djeison L. Raymundo ◽  
Cristine Cerva ◽  
Saulo P. Pavarini ◽  
André G. C. Dalto ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Reproductive Performance ◽  
Cattle Herd ◽  
Lactation Period ◽  
Mean Values ◽  
Cattle Diseases ◽  
Dairy Cattle Herd ◽  
The Mean ◽  
The Impact ◽  
Voluntary Waiting Period

Over the last decades, the emphasis on the health of dairy cows has changed from an individual to a herd level. In this scenario, the role played by the recording system and its interpretation by veterinarians has gained primordial importance. The records of productive and reproductive performance and of sanitary status from a southern Brazilian dairy cattle herd have been presented and discussed. The period of study was 2000-2009. Mean values per lactation period were 349D 8436M 290F 275P 201SCS (D: days in lactation, M: kg of milk yield, F: kg of fat, P: kg of protein and SCS: somatic cell score in 1000 cells/ml of milk). Major indexes of reproductive efficiency included age at first calving (31 months), services per conception (2.1), intercalving interval (428 days), calving to conception interval (146 days), mean annual rates of parturitions (76.2%), fetal losses (9.8-19.0%), and stillbirths (3.6%), apart of voluntary waiting period (94 days). Main information on sanitary status of the herd was associated with the mean prevalence of common disorders of dairy cattle such as anaplasmosis (29.8%), mastitis (27.8%), digital diseases (26.3%), ovarian cysts (21.3%), placental retention (19.7%), postpartum uterine infections (10.6%), and calf diarrhea (23.7%) and pneumonia (16.8%), among others. In addition, culling reasons (low reproductive performance [56.3%] and udder/mastitis problems [33.6%]), causes of cattle deaths (anaplasmosis [16.4%] and leukosis [11.4]), and the impact of cattle diseases such as tuberculosis, leukosis, and neosporosis on the herd have also been presented and succinctly discussed. Numbers between brackets represent rates accumulated in the 10-year period.

Effect of restricted food intake, before and/or after mating, on the reproductive performance of Greyface ewes

1989 ◽  
Vol 48 (1) ◽  
pp. 149-155 ◽  
Author(s):  
S. M. Rhind ◽  
W. A. C. McKelvey ◽  
S. McMillen ◽  
R. G. Gunn ◽  
D. A. Eiston
Keyword(s):  
Food Intake ◽  
Reproductive Performance ◽  
Live Weight ◽  
Experimental Period ◽  
Metabolizable Energy ◽  
Ovulation Rate ◽  
Daily Ration ◽  
The Mean ◽  
Low Levels ◽  
Lambing Rate

ABSTRACTThe effect on the reproductive performance of Greyface (Border Leicester × Scottish Blackface) ewes of a low level food intake and associated loss of live weight from either 14 days before mating, or from the time of mating, until 11 to 26 days after mating, was investigated. Ewes (252) were allocated to one of three treatments with ewes within each treatment divided into two flocks (flock A: 16 ewes per treatment; flock B: 68 ewes per treatment). Ewes of treatment LL were given a ration providing proportionately 0·5 estimated metabolizable energy (ME) requirements for maintenance from 2 weeks before mating. Those of treatment HL were given a daily ration providing 1·5 estimated ME requirements for maintenance until mating and the restricted ration thereafter. Ewes of treatment HH were given the higher ration throughout the experimental period. Flock A ewes were slaughtered at 11 days post mating and flock B ewes at between 18 and 26 days post mating. Treatment differences in the ovulation rates of flock A ewes were not statistically significant but in flock B, ewes of treatment LL had a lower mean ovulation rate (1·81) than those of treatments HL (2·23) and HH (2·09) (P < 0·001). The lower ovulation rate of LL ewes relative to HL ewes in flock B was reflected in a lower mean potential lambing rate per ewe pregnant than in the HL treatment (1·58 v. 1·79; P < 0·01) and per ewe put to the ram (1·37 v. 1·65; P < 0·01). HL ewes had a slightly lower mean potential lambing rate per ewe pregnant (1·79 v. 1·97; P < 01) and per ewe put to the ram (1·65 v. 1·82; P < 0·05) than HH ewes. Ova wastage rates of LL + HL and HH ewes were 0·26 and 014 (P < 001) respectively at 24 days post mating. Values for LL and HL ewes (0·27 and 0·25 respectively) were not significantly different.Estimated mean conceptus lengths were 370, 500 and 1400 μin for LL, HL and HH ewes respectively (P < 0·05).It is concluded that low food intake before mating reduced the mean ovulation rate and low intakes after mating compromised embryo growth rate and induced a higher rate of ova wastage; this increase in the incidence of ova wastage was not significantly exacerbated by the low levels of intake prior to mating.

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